Some of you already noticed, so here's a quick summary.
We've just posted a new version of the schema.org site.
It has two vocabulary changes:
1. addition of http://schema.org/sameAs
Per http://www.w3.org/wiki/WebSchemas/sameAs this adds a property to
Thing that makes it easier to indicate identifying URLs for entities
being described.
2. http://schema.org/citation has been moved up to CreativeWork, from
MedicalScholarlyArticle
Details http://www.w3.org/wiki/WebSchemas/CitationPromotion
Thanks to the BibExtend group for suggesting this small but useful improvement.
The site also has some practical improvements:
1. schema.org now has per-property pages.
I'm happy to close this longstanding issue,
http://www.w3.org/2011/webschema/track/issues/2
Every property in schema.org should now de-reference. For example,
http://schema.org/actor or the links above for
http://schema.org/sameAs and http://schema.org/citation. This is
currently quite basic but should be useful in a number of ways. It
helps with property-centric schemas such as LRMI (e.g.
http://schema.org/learningResourceType ) and provides a foundation for
publishing other useful pieces of information about each property
(source/attribution, mappings, inverses and super-properties etc.).
2. Per-term machine-readable definitions
Our Type, Enumeration and the new Property pages each have basic
embedded RDFa/RDFS schema descriptions. We continue to publish a full
RDFa/RDFS dump of the schema at
http://schema.org/docs/schema_org_rdfa.html and are considering other
improvements (JSON-LD, OWL, change logs / history, etc.).
3. Pages for Enumerations now use '::' instead of '>' to indicate type
membership.
http://schema.org/Enumeration has a number of sub-types for areas
where we enumerate a small number of options. For example,
http://schema.org/BookFormatType is such a type.
http://schema.org/BookFormatType itself has a number of instances,
e.g. http://schema.org/Hardcover
Previously, the presentation of Hardcover was like this:
Thing > Intangible > Enumeration > BookFormatType > Hardcover
We now show this:
Thing > Intangible > Enumeration > BookFormatType :: Hardcover
... to make it slightly clearer that Hardcover is modeled as an instance.
(whether this is a good treatment of book formats is another and more
substantive topic...).
Thanks to all who contributed to this.
Dan (for the schema.org team)